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FishadvancedFreshwater

Arrowhead Puffer

Pao suvattii

AnimaliaChordataActinopterygiiTetraodontiformesTetraodontidae

📍 Mekong River, Thailand & Laos

Ask Finn

Specialist ambush predator with a wedge-shaped body and upturned face adapted for burying in sand and striking prey from below. Highly aggressive — must be kept alone. One of the most challenging freshwater puffers.

Size5"
Min Tank40g
aggressive
Zonebottom

Care Guide

Diet

Arrowhead Puffers are strict carnivores requiring live prey as their primary diet. Offer live small fish, shrimp, snails, and aquatic insects once daily. Supplement occasionally with frozen bloodworms and brine shrimp, though they strongly prefer live, moving prey to trigger their predatory instincts.

Behavior

Highly aggressive ambush predators that must be kept in solitary confinement—they will attack or consume any tankmate. They spend most time buried in sand or substrate with only their upturned eyes and mouth visible, waiting to strike passing prey. Extremely territorial and will defend their territory vigorously against any intrusion.

Breeding

Breeding in captivity is extremely rare and poorly documented. They require very specific conditions including soft, acidic water and live food abundance, but captive pairs rarely spawn. Fry rearing is virtually unknown in the hobby, making this species unsuitable for breeding projects.

Common Diseases

Ich (White Spot Disease)

Symptoms

White spots on body and fins, flashing against substrate, lethargy

Treatment

Raise temperature gradually to 28-30°C, perform 25% water changes daily, use aquarium salt (1 tsp per 5 gallons) or ich medication; maintain excellent water quality

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy

Treatment

Improve water quality with frequent partial changes, treat with antibacterial medication, ensure pristine substrate conditions to prevent secondary infections

Parasitic Infections

Symptoms

Excessive scratching on substrate, visible parasites, weight loss, clamped fins

Treatment

Quarantine immediately, treat with anti-parasitic medication, perform daily water changes, maintain optimal water parameters

Stress-Related Illness

Symptoms

Loss of appetite, hiding, color fading, susceptibility to secondary infections

Treatment

Ensure adequate substrate depth (4+ inches sand), minimal disturbance, stable water parameters, live food availability, and complete solitude

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Quick Facts

pH
6.5–7.5
diet
carnivore/live prey
maxSize
5 inches
minTankSize
40 gallons
temperature
75–82°F (24–28°C)

Temperature

75–82°F

24–28°C

Stats

Community tips0
Kept by0 hobbyists